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The digital memory scope MS-1660 consists of a DC-20MHz
bandwidth, dual-trace oscilloscope with a built-in digital
memory. T h e memory features a capacity of 8 bits x 2048
words per channel and a maximum write speed of 1 JUS/
word. T h e unit provides the ability to store and reproduce
sporadic, transient and repetitive
stored signals out to a pen recorder, through simple opera-
tion.
1. For each trace, a memory space of 2k words is pro-
vided.
The unit has two independent
memories of 8 bits x 2048 words each.
2. Dual channel
Input consists of two events at a time, each allotted
an independent memory space. Maximum write speed
is 1 jus/word.
3. Dual clock
T w o completely independent sampling clocks are pro-
vided to
allow simultaneous storage of two
unrelated signals. A l s o , the same signal can be stored
at low speed and high speed (equivalent of
magnification) at the same time.
4. Minus delay function
The unit is capable of storing the signals produced
before a trigger pulse, which are not observable on
oscilloscopes.
The data after the delay set point can be observed on
the other
channel, by magnification
The delay set point is continuously variable with cursor
indication.
5. Hard copy
The pen recorder provided can be used to produce the
hard copy of the displayed waveform from memory.
In addition, pen free run function is provided for auto-
matic repetition of signal storage and corresponding
hard copy reproduction.
6. T w o storage modes are selectable. The refresh mode
initiates writing with a trigger signal. In the pretrigger
mode, the termination of writing is controlled with a
trigger signal, in either mode, the waveform following
the cursor point can be viewed in magnified or contract-
ed form in the other channel.
7. Free run function for automatic repetition of read/write
operations
Once written, the signals are held in a read state for up
to 20 sec, then enter a writable state in which the
signals wait for a trigger signal. T h i s cycle is repeated
automatically.
F E A T U R E S
events, and rear the
semiconductor
10. Line synchronization facilitates the observation and
totally
1 1 . B y setting the mode to X - Y , the unit changes to an X - Y
partial
12. A
13. T h e vertical axis provides a high sensitivity of 1 mV/div,
14. The unit is capable of high-speed sweep of 20ns/div.
or
contraction.
15. A
16. The 0, 10, 9 0 , and 100% marks on the screen provides
17. The angle of horizontal trace can be easily corrected
18. The scale illumination
19. With the automatic free run function, the trace can be
20. C H 1 O U T P U T terminals are provided to monitor the
The contents of the memory can be read out or written
via G P - I B so that external data can be monitored on the
C R T screen by storing the data in the memory. Since an
independent
sampling
channel, separate signals can be stored with separate
clocks at the same time, and the same signals can be
stored at a low speed and a high speed at the same time.
A single trace can be used as 4 K words.
8. Memory backup function
Signals stored remain unchanged in the memory even
after turning power off.
lyzed at any time on later days.
9. With the G P - I B interface, the data within in memory can
be sent out, and external data can be written in the
memory for display on the screen.
storage of the signals that are triggered with the line
frequency.
oscilloscope with a one-button operation.
rectangular, large sized C R T with wider
area provides full-screen signal observation.
plus a wide band range from 5 m V / d i v to a desired set-
ting.
150mm
rectangular
(domed mesh type, post-acceleration with 6 k V acceler-
ation
voltage)
provides
without parallax.
easy measurement of rise time.
with trace rotation controls on the front panel.
dark place, and also enables photographic
of the on-screen waveform.
checked while no signal is fed.
input signals on the C H 1 .
clock
is
provided
for
each
Thus waveforms may be ana-
display
C R T w i t h internal
graticule
easy waveform
observation
facilitates measurement in a
recording
3
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